Lochinvar 45000, 260000 service manual Contents

Page 2

Contents

HAZARD DEFINITIONS

. 2

5. ELECTRICAL CONNECTIONS

 

PLEASE READ BEFORE PROCEEDING

. 3-4

Boiler Operating Temperature Control

34

RATINGS

. 5

Room Thermostat or Remote Thermostat Connection . . 34

THE SOLUTION --HOW IT WORKS

. 6-8

Auxiliary Device Connection to Terminal Strip

34

1. DETERMINE BOILER LOCATION

 

Pump Wiring for a Heating Boiler

35

Location of Unit

. 9

Temperature Adjustment

35

Clearances

. 9

Temperature Control Settings

35

Combustion and Ventilation Air

10-12

Maximum Set Point Determination

36

2. VENTING

 

Outdoor Air Reset Option

38

A Conventional Negative Draft Venting System

13-14

Additional Temperature Controls

38

Vertical Vent Termination Clearances

15

Blocked Vent and Flame Roll-Out / Flame Interlock Switch . 39

Masonry Chimney Installation

16

6. STARTUP

 

Inspection of a Masonry Chimney

16

Initial Startup

40

Automatic Vent Damper

17

Lighting Instructions for Spark Ignition Pilot Models (M9) . . . .

40

3. GAS CONNECTIONS

 

Safety Shutoff Test for Spark Ignition Pilot System

41

Gas Supply

18

Intermittent Pilot Spark Ignition System (M9)

42

Gas Pressure Test

18

Freeze Protection

42

Gas Connection

18

Water Treatment

42

Gas Piping

19

7. MAINTENANCE

 

Gas Manifold Pressure Adjustment Procedure

20

Maintenance and Annual Startup

43-48

Checking Gas Supply Pressure

21

8. TROUBLESHOOTING

49

Combination Gas Valves

22

9. DIAGRAMS

50

4. WATER CONNECTIONS

 

 

 

Relief Valve

23

 

 

Water Flow Switch (if equipped)

23

 

 

Low Water Cutoff (if equipped)

24

 

 

Typical Heating Boiler Installations

24-25

 

 

Piping of the Boiler System

25

 

 

Performance Loop

27

 

 

Primary/Secondary Boiler Piping

27-28

 

 

Low Temperature Bypass Requirements

28

 

 

Boiler Flow Rates

28

 

 

Primary / Secondary Piping

29-31

 

 

Full System Flow

32-33

 

 

Hazard definitions

The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product.

DANGER

WARNING

CAUTION

CAUTION

NOTICE

DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property damage.

NOTICE indicates special instructions on installation, operation, or maintenance that are important but not related to personal injury or property damage.

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Contents Models 45,000 260,000 Btu/hr Contents Warranty Please read before proceedingCodes Solution Boiler =B=R Rating RatingsSolution How it works Temperature and pressure gaugeSolution How it works Solution How it works Determine boiler location Location of unit3Combustion Air Direct from Outside 6Combustion Air from Outside Single Opening Minimum Recommended Combustion AIR Supply to Equipment Room Vent Pipe Sizes VentingConventional Negative Draft Venting System Venting Vertical Vent Termination Clearances Less from Ridge From Parapet WallVent Materials Masonry Chimney InstallationSidewall Venting Negative Draft Fan Assisted VentingAutomatic Vent Damper 7Vent Damper and Vent Damper Terminal BlockGas Connection Gas connectionsGas Supply Gas Pressure Test Install Piping to Control Gas PipingGas Manifold Pressure Adjustment Procedure 2WrenchChecking Gas Supply Pressure 4Gas Supply PressureTwo Stage Burner Control System Combination Gas ValvesVenting of Combination Gas Valves Relief Valve Water Flow Switch if equippedWater connections Minimum Required Flow For Heating Boiler Typical Heating Boiler InstallationsLow Water Cutoff if equipped General Plumbing RulesSystem Temperature Rise Chart Piping of the Boiler SystemCirculator Pump Requirements Heat Exchanger Pressure Drop ChartWater Connections Circulator Pump Operation Circulator Pump SpecificationsPrimary/Secondary Boiler Piping Boiler Flow Rates Low Temperature Bypass RequirementsFull Flow Application Primary / Secondary Piping Make UP WaterMake UP Water 6Multiple Boilers Zoned with Circulators Full System Flow From System8Single Boiler Full System Flow with Low Temperature Bypass Electrical connections Terminal Strip WiringBoiler Operating Temperature Control Auxiliary Device Connection to Terminal StripTemperature Adjustment AMP Draw DataMaximum SET Point Determination Maximum Set Point DeterminationInstallation of Remote Sensors Outdoor Air Temperature SensorWiring of Remote Sensors Outdoor Air Reset Option Additional Temperature ControlsBlocked Vent and Flame Roll-Out / Flame Interlock Switch 7Blocked Vent Switch LocationInitial Start-up Pre-start ChecklistStart-up Lighting Instructions for Spark Ignition Pilot ModelsTo Turn Off Gas to Appliance Safety Shutoff Test for Spark Ignition Pilot SystemOperating Instructions Water Treatment Intermittent Pilot Spark Ignition SystemFreeze Protection Ignition and Control TimingsOwner maintenance Maintenance Maintenance and annual startupService technician See the User’s Information Manual for instructionsMaintenance Check Expansion Tank Check Relief ValveHeat Exchanger / Burner Access Check All WiringCheck Control Settings Perform Start-up and ChecksInspection and Cleaning Breathing Fresh airGas Train and Controls Review with ownerInspection of Heat Exchanger Waterways Water Circulating PumpTroubleshooting Troubleshooting Guide M9 Solution BoilersWiring Diagram M9 Unit 45,000 260,000 Btu/hr Models DiagramsSchematic Diagram M9 Unit 45,000 260,000 Btu/hr Models
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